摘要
鄂尔多斯盆地伊陕斜坡构造带长7段页岩油储层岩性复杂多样,储层的孔隙度、渗透率等物性参数变化范围大,各类矿物在储层中的含量与分布也呈现出显著差异。为了实现长7段页岩油储层精准评价,为后续勘探开发决策提供坚实依据,现场引入了岩矿扫描录井技术。通过分析同一区块多口井的岩矿扫描数据,建立了长7段页岩油储层综合品质计算方法和页岩油储层“四性”综合评价标准,并在多个关键领域取得了显著应用成效:在微观储层物性定量分析方面,可定量表征储层的孔隙结构和流体分布,为产能评估提供更准确的数据支持;在岩石力学性质精细分析方面,可准确掌握岩石的力学特性,有助于压裂施工方案优化;在水平井地质导向井眼轨迹及时优化方面,可为钻井作业提供及时、准确的地质信息,显著提高钻井效率和成功率;在甜点区预测与评价中,通过对多参数的综合分析,可精准识别高效开发潜力区域;在压裂方案个性化设计方面,可依据不同储层段的特性,定制化设计压裂方案,显著提升压裂效果。以鄂尔多斯盆地伊陕斜坡H 701井的应用为例,验证了岩矿扫描录井技术在页岩油储层评价中的良好适用性,不仅为其他类似盆地或地区的页岩油储层评价积累了宝贵经验,也为更广泛的非常规能源储层评价提供了重要借鉴。
The Chang 7 Member shale oil reservoirs in the Yishaan Slope structural belt of the Ordos Basin exhibits complex and diverse lithologies.Reservoir properties such as porosity and permeability vary significantly,while the content and distribution of various minerals within the reservoirs also show marked differences.To achieve precise evaluation of the Chang 7 Member shale oil reservoirs and provide a solid foundation for subsequent exploration and development decisions,rock-mineral scanning logging technology was introduced to the field.By analyzing scanning data from multiple wells within the same block,this study established a comprehensive quality computing method and comprehensive evaluation criteria for the four properties of the Chang 7 Member shale oil reservoirs,achieving significant application results in several key areas.In quantitative micro-reservoir physical property analysis,it enables precise characterization of pore structure and fluid distribution,providing more accurate data support for productivity assessment.In detailed rock mechanics analysis,it accurately captures mechanical properties,aiding in optimizing fracturing schemes.For real-time optimization of horizontal well geosteering trajectories,it delivers timely and precise geological information to drilling operations,significantly enhancing drilling efficiency and success rates.In sweet spot prediction and evaluation,comprehensive analysis on multiparameter enables precise identification of high-potential development zones.For personalized fracturing design,customized fracturing plans tailored to distinct reservoir characteristics significantly enhance fracturing effectiveness.Taking the application at Well H 701 in the Yishaan Slope of the Ordos Basin as an example,this paper validates the excellent applicability of rock-mineral scanning logging technology in shale oil reservoir evaluation.This not only accumulates valuable experience for shale oil reservoir evaluation in other similar basins or regions but also provides important reference for broader unconventional energy reservoir evaluation.
作者
郭亚非
GUO Yafei(Mud Logging Technology Research and Development Center,CNPC,Panjin,Liaoning 124010,China;GWDC Mud Logging Company,CNPC,Panjin,Liaoning 124010,China)
出处
《录井工程》
2025年第4期103-112,共10页
Mud Logging Engineering
基金
中国石油集团长城钻探工程公司科技项目“页岩油储层录井六性评价理论及新技术研究”(编号:GWDC2024-01-AJC-05)。
关键词
岩矿扫描录井
储层评价
地质导向
页岩油
甜点
压裂方案
鄂尔多斯盆地
长7段
rock-mineral scanning logging
reservoir evaluation
geosteering
shale oil
sweet spot
fracturing scheme
Ordos Basin
Chang 7 Member
